Drop unused indices

This promotes and expands our existing optional migration.
Based on usage statistics from several instances, see:
https://akkoma.dev/AkkomaGang/akkoma/issues/764

activities_hosts is now retained after all since it’s essential
for the "instance" query parameter of *oma’s public timeline to
reliably work in a reasonable amount of time. (Although akkoma-fe has
no support for this feature and apparently barely anyone uses it.)

activities_actor_index was already dropped before in
20221211234352_remove_unused_indices; no need to drop it again.

Birthday indices were introduced in pleroma starting with
20220116183110_add_birthday_to_users which is past the
last common migration 20210416051708.
This commit is contained in:
Oneric 2024-05-01 23:01:28 +02:00
parent 21a81e1111
commit b7e3d44756
2 changed files with 64 additions and 74 deletions

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defmodule Pleroma.Repo.Migrations.DropUnusedIndexes do
use Ecto.Migration
def up do
# Leftovers from a late Pleroma migration (will not be restored on rollback)
drop_i(:users, [:show_birthday], :users_show_birthday_index)
drop_i(
:users,
["date_part('month', birthday)", "date_part('day', birthday)"],
:users_birthday_month_day_index
)
# Unused
drop_i(:activities, ["(data->'cc')"], :activities_cc_index)
drop_i(:activities, ["(data->'object'->>'inReplyTo')"], :activities_in_reply_to)
drop_i(:activities, ["(data #> '{\"object\",\"likes\"}')"], :activities_likes)
drop_i(:activities, ["(data->'to')"], :activities_to_index)
drop_i(:objects, ["(data->'likes')"], :objects_likes)
drop_i(:users, [:featured_address], :users_featured_address_index)
drop_i(:users, [:following_address], :users_following_address_index)
drop_i(:users, [:invisible], :users_invisible_index)
drop_i(:users, [:last_status_at], :users_last_status_at_index)
drop_i(:users, [:tags], :users_tags_index)
drop_i(:apps, [:client_id, :client_secret], :apps_client_id_client_secret_index)
drop_i(:apps, [:user_id], :apps_user_id_index)
# Duplicate of primary key index (will not be restored on rollback)
drop_i(
:user_frontend_setting_profiles,
[:user_id, :frontend_name, :profile_name],
:user_frontend_setting_profiles_user_id_frontend_name_profile_name_index
)
end
def down do
create_i(:activities, ["(data->'cc')"], :activities_cc_index, :gin)
create_i(:activities, ["(data->'object'->>'inReplyTo')"], :activities_in_reply_to)
create_i(:activities, ["(data #> '{\"object\",\"likes\"}')"], :activities_likes, :gin)
create_i(:activities, ["(data->'to')"], :activities_to_index, :gin)
create_i(:objects, ["(data->'likes')"], :objects_likes, :gin)
create_i(:users, [:featured_address], :users_featured_address_index)
create_i(:users, [:following_address], :users_following_address_index)
create_i(:users, [:invisible], :users_invisible_index)
create_i(:users, [:last_status_at], :users_last_status_at_index)
create_i(:users, [:tags], :users_tags_index, :gin)
create_i(:apps, [:client_id, :client_secret], :apps_client_id_client_secret_index)
create_i(:apps, [:user_id], :apps_user_id_index)
end
defp drop_i(table, fields, name) do
drop_if_exists(index(table, fields, name: name))
end
defp create_i(table, fields, name, type \\ :btree) do
create_if_not_exists(index(table, fields, name: name, using: type))
end
end

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defmodule Pleroma.Repo.Migrations.DropUnusedIndexes do
use Ecto.Migration
@disable_ddl_transaction true
@disable_migration_lock true
def up do
drop_if_exists(
index(:activities, ["(data->>'actor')", "inserted_at desc"], name: :activities_actor_index)
)
drop_if_exists(index(:activities, ["(data->'to')"], name: :activities_to_index))
drop_if_exists(index(:activities, ["(data->'cc')"], name: :activities_cc_index))
drop_if_exists(index(:activities, ["(split_part(actor, '/', 3))"], name: :activities_hosts))
drop_if_exists(
index(:activities, ["(data->'object'->>'inReplyTo')"], name: :activities_in_reply_to)
)
drop_if_exists(
index(:activities, ["((data #> '{\"object\",\"likes\"}'))"], name: :activities_likes)
)
end
def down do
create_if_not_exists(
index(:activities, ["(data->>'actor')", "inserted_at desc"],
name: :activities_actor_index,
concurrently: true
)
)
create_if_not_exists(
index(:activities, ["(data->'to')"],
name: :activities_to_index,
using: :gin,
concurrently: true
)
)
create_if_not_exists(
index(:activities, ["(data->'cc')"],
name: :activities_cc_index,
using: :gin,
concurrently: true
)
)
create_if_not_exists(
index(:activities, ["(split_part(actor, '/', 3))"],
name: :activities_hosts,
concurrently: true
)
)
create_if_not_exists(
index(:activities, ["(data->'object'->>'inReplyTo')"],
name: :activities_in_reply_to,
concurrently: true
)
)
create_if_not_exists(
index(:activities, ["((data #> '{\"object\",\"likes\"}'))"],
name: :activities_likes,
using: :gin,
concurrently: true
)
)
end
end